header

Yank speak for an exhaust manifold - the series of pipes which allow the exhaust gasses to pass from the cylinder to the catalytic converter

Yo, my new header got me another 10 BHP

Leggy

Referring to the Subaru Legacy, 4 door sedan or 5 door station wagon, basically a stretched version of the Impreza

That Leggy GT with the twin blowers is one fast piece of kit!

dandism

Goofy Jap-speak nonsense word seen on the rear window of later model import versions of the Toyota MR2 MK2

Mature sporty personal
More innovation more adult
A man in dandism
Midship powered speciality